Knrth, the Recreant Commander

{r}: Deal 1 damage to target Alien.
{1}{g}: Relocate any one graveyard as library.
Shuffle the cards and put it at the bottom.
{2}{w}: Reveal the top 3 cards of an opponent's
library. Abduct all revealed creatures.
{3}{u}: Return Knrth, the Recreant Commander
to its owner's hand.
{4}{b}: Look at an opponent's hand and choose
a card. Relocate that card as the bottom
card of a library.